Hammer



FIG. 1 is a perspective view of a hammer showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side evaluation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Wherein the broken line in the Figures are for environmental purposesonly and form no part of the claimed design.

The ornamental design for a hammer, as shown and described.